Question Battery drain ISSUE?! :-(

[tomini]

BATTERY DRAIN ISSUE?
My Mi Band 4 (GLOBAL version) came in Friday with battery at 48% from Friday I changed a lot my Watchface themes (like 20x times) and I had a .GIF playing on the main screen when it was ON, brightness at half and heart tracking only for sleep.
Today at 13:08 I have 33%...I never charged Mi Band 4 from the time it arrived, so it could be just that it had his charge for too long without any use. Yeah and a big thing could be that my phone is only Bluetooth 4.2...and Bluetooth 5.0 is power one
Thanks

EDIT: 16:38 and I have 18% battery

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What have I done wrong?
No steps on the bottom etc...
I downloaded this:
«Fallout PipBoy» by Mascone - Mi Band 4 | Amazfit WatchFaces catalog
And then docompiled and changed only "MON, TUE, WED, etc..." for my foreign language "Po, Út, St, etc..." but it doesn't show steps or any other information
Here are both WatchFaces compiled and decompiled in .ZIP on my Google Drive.
Mi Band 4 PipBoy WHAT HAVE I DONE WRONG.rar
Many thanks in advance

EDIT:
I managed to do this, but it shows "Unable to sync, try again" in MiFit app.
Please help. Same as last one, I edited this version: «Fallout PipBoy» by Mascone - Mi Band 4 | Amazfit WatchFaces catalog
So do I need to change something in the string? I just changed pictures for the same resolution one's and same colors...same everything!
Thanks

 

[tomini]

EDIT!
I figured it out
It was 57kB higher than it is possible. MB4 is able to get only 320kB as said somewhere on forum.
I fixed it with using PaletteImageMode compiling and compressing the .PNG.
But still MAYBE a battery drain Please contribute any tips for the battery issue.
Should I wait 'till the MB4 dies totally before recharge or should I start charging it when it reaches under 10% capacity?
Thanks